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standards for organic parameters were applicable Statewide, prior to the hearing to consider the changes to which this Statement of Basis and Purpose is applicable. This has had the same effect as would have a basic standard applicable to all waters of the state. The Commission finds that it would be easier to make changes to one document,the Basic Standards and Methodologies, as future scientific information necessitates,than to make such changes in each basin. Thus it is more economically reasonable to deal with the organic substances in one regulatory document, rather than many. There was testimony that it was confusing to have the table of organic parameters as criteria guidance subject to change on a stream by stream basis when the parameters had been assigned and were merely to provide guidance. It was testified that it would be less confusing to have the table in the text of the regulation to provide basic standards. The City of Loveland testified that if the table in question were move to the regulatory text there was the possibility of a basin standard differing from the general standard. The Commission found that its regulations enabled I to set site specific standards to stream segments as an exception to the basic standard, and that for the parameters in this table it was unlikely to have different basin standards. The organic parameters in the table are not substances that form a naturally occurring background. They are toxics controlled at the point of sale or use. They are not ambient and subject to the same treatment as are other naturally occurring parameters. The Commission found it inappropriate to regulate these organic constituents in the same manner as are those that can be ambient or uncontrollable background parameters. Therefore, the Commission changed the guideline table to a basic standard in the body of the regulation. 35.13 STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY,AND PURPOSE: The provisions of 25-8-202(1)(a) (b) and (2); 25-8-203; and 25-8-204, C.R.S., provide the specific statutory authority for consideration of the attached regulatory amendments and also the statements of Basis and Purpose and Fiscal Impact in compliance with 24-4-103(4) C.R.S. BASIS AND PURPOSE: At the triennial review conducted April 7, 1986, no recommendations were received from the public. Non-substantive amendments were recommended by the Water Quality Control Commission to correct clerical errors. In adopting these corrections,the Commission considered the economic reasonableness of its action. Except as specified,the corrections in no way change the classifications and numeric standards originally adopted by the Commission. FISCAL IMPACT STATEMENT: The Water Quality Control Commission found that the clerical corrections to its regulation 3.5.0 have no fiscal impact. 35.14 STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; 1988 AMENDEMENTS REGARDING SAN MIGUEL RIVER SEGMENTS The provisions of 25-8-202(1)(a), (b) and (2); 25-8-203; 25-8-204; and 25-8-207 C.R.S., provide the specific statutory authority for adoption of the attached regulatory amendments. The Commission also adopted, in compliance with 24-4-103(4) and 24-4-103(8)(d) C.R.S., the following statements of basis and purpose and fiscal impact. BASIS AND PURPOSE: The hearing that resulted in these amendments was held as the result of a petition submitted by the Idarado Mining Company (Idarado). Idarado requested that the Commission, pursuant to 25- 8-207 C.R.S., make a finding of inconsistency regarding certain use classifications and water 24